Error in memcpy

Im working on a DLL that is supposed to replace certain parts of the memory with NOP.

Here is the line of code...

Code:

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memcpy((DWORD*)0x00481BEC,(BYTE*)0x90,1);

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Here are the errors...

Quote:

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error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
error C2365: 'memcpy' : redefinition; previous definition was 'function'
c:\program files\microsoft visual studio 9.0\vc\include\string.h(53) : see declaration of 'memcpy'
error C2078: too many initializers

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Thankyou for helping me.

Are you including cstring?

Also, you probably should cast the first address to void * rather than DWORD *, and the second parameter should be the address of something containing 0x90 (or you could of course just use a BYTE * pointer and assign it with 0x90 in the first place if all you are setting is one byte, or use memset)

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Mats

Are windows code segments writable?

And where did you pluck that address from?